Diverse Synthesis of Triarylselenonium Salts and o‑(Alkoxy)aryl Aryl Selanes via Insertion of Benzyne into the SeO Bond

An insertion of benzyne into the SeO bond has been realized. In this reaction, two types of compounds containing selenium could be synthesized from different substrates. When diaryl selenium oxides were used, triarylselenonium salts were furnished, while o-(alkoxy)­phenyl phenyl selanes could be produced from aryl alkyl selenium oxides.